% 22 Feb 2021 23:18:55
\documentclass{article}
\begin{document}

{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{3}{c}}
\hline\hline
            &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}\\
            &\multicolumn{1}{c}{Pandemics}&\multicolumn{1}{c}{Wars}&\multicolumn{1}{c}{p-value}\\
\hline
$ h = 0 $   &       -0.02         &       -0.06\sym{**} &        0.29         \\
            &      (0.04)         &      (0.02)         &                     \\
[1em]
$ h = 10 $  &       -0.03         &        0.24         &        0.51         \\
            &      (0.33)         &      (0.22)         &                     \\
[1em]
$ h = 20 $  &       -1.30\sym{***}&        0.60\sym{**} &        0.00         \\
            &      (0.44)         &      (0.29)         &                     \\
[1em]
$ h = 30 $  &       -1.04\sym{**} &        0.58\sym{*}  &        0.01         \\
            &      (0.53)         &      (0.35)         &                     \\
[1em]
$ h = 40 $  &       -0.77         &        0.19         &        0.19         \\
            &      (0.60)         &      (0.40)         &                     \\
\hline
Observations&         524         &                     &                     \\
\hline\hline
\multicolumn{4}{l}{\footnotesize Standard errors in parentheses}\\
\multicolumn{4}{l}{\footnotesize \sym{*} \(p<0.1\), \sym{**} \(p<0.05\), \sym{***} \(p<0.01\)}\\
\end{tabular}
}

\end{document}

